a = int(input())
if a >= 1800:
  print('1')
elif a >=1600:
  print('2')
elif a >=1400:
  print('3')
elif a>=1200:
  print('4')
elif a >= 1000:
  print('5')
elif a >=800:
  print('6')
elif a>=600:
  print('7')
else:
  print('8') a = int(input()) a int(input()) int input() input if a >= 1800:
  print('1')
elif a >=1600:
  print('2')
elif a >=1400:
  print('3')
elif a>=1200:
  print('4')
elif a >= 1000:
  print('5')
elif a >=800:
  print('6')
elif a>=600:
  print('7')
else:
  print('8') a >= 1800 a 1800 print('1') print '1' elif a >=1600:
  print('2') a >=1600 a 1600 print('2') print '2' elif a >=1400:
  print('3') a >=1400 a 1400 print('3') print '3' elif a>=1200:
  print('4') a>=1200 a 1200 print('4') print '4' elif a >= 1000:
  print('5') a >= 1000 a 1000 print('5') print '5' elif a >=800:
  print('6') a >=800 a 800 print('6') print '6' elif a>=600:
  print('7') a>=600 a 600 print('7') print '7' print('8') print '8' a = int(input()) int(input()) a
a = int(input())
if a >= 1800:
  print('1')
elif a >=1600:
  print('2')
elif a >=1400:
  print('3')
elif a>=1200:
  print('4')
elif a >= 1000:
  print('5')
elif a >=800:
  print('6')
elif a>=600:
  print('7')
else:
  print('8')